Build me an LED attachment for my saxophone

Hi there! My name is Gabi and I am a professional saxophone player. A lot of the work I get, especially in the summer, is for live events including DJ's, a light show, and other stage performers. I want to put battery-powered LED strips on my saxophone, but I don't want to attach them directly to the horn as this will damage it and I won't always be using them. An instagram friend of mine said his friend custom-made him this contraption (pictures included below) and I am looking for something just like this. As you can see in the pictures, his LED strip is not attached directly to the saxophone. There is a clear plastic attachment shaped exactly the same as the bell which holds the lights. Unfortunately, both him and his guy are in Spain, so I'm looking for someone to design it here in the US! Feel free to come up with a different design if you think something else could work! Thanks -- Gabi